Commutator



Nov. 11 1924. 1,514,828

M. BOTTINO GOMMUTATOR Filed Dec. 29. 1920 Patented Nov. 11, 1924.

PATENT OFFICE.

kMICHAEI'J BOTTINO, OF AUBURN, NEW YORK.

COMMUTATOR.

Application filed December 29, 1920.

To all whom t may concern:

Be it known that 1, MICHAEL Bo'rrINo, a citizen of the United States, residing at Auburn, in the county ,of Cayuga and State of New York, have invented certain new and useful Improvements in Commutators, of which the following is a specification.

The present invention relates to commutators for internal combustion engines and consists in the combinations and arrangements of elements hereinafter described, and particularly set forth in the accompanying claim.

The invention has for its purpose to provide a structure of cominutator adapted for effecting a spark in some one cylinder of the engine to the end of starting the engine without the necessity of cranking.

Another object of the invention is to provide a commutator wherein the spark is prolonged, thereby insuring ignition and avoiding the formation of carbon in the cylinders.

1t is further proposed to provide the commutator with a fixed or stationary part for connecting with the wires leading to the coils, thereby leaving the adjustable portion unencumbered and thus avoiding the breaking of the wires which occurs after constant retarding and advancing of the spark where the wires are attached to the movable commutator part.

The invention is disclosed by way of illustration in the accompanying drawings wherein:

Figure 1 is a sectional view taken through a commutator constructed in accordance with my invention.

Figure 2, an elevation of the cap member showing the contact brushes.

Figure 3, an elevation of one side of the ring portion as taken on the line 3 3 of Figure 1.

Figure 1, an edge view of the ring, and

Figure 5, a View similar to Figure 3 taken on the line 5-5 of Figure 1.

Referring to the construction in further detail and with like reference characters designating corresponding parts in the different views shown, 6 represents a cylindrical portion or ring having a band of insulating material 7 secured on its inner surface by the several screws 8, or otherwise; and segmental contacts 9 are embedded within the insulating band 7 as shown. The segments of the contact 9 are each of ap- Serial No. 433,938.

proximately ninety degrees (90), and are separated by the small insulated portions 10 for the purpose hereinafter described.

The portion 6 has one edge cut away as at 11 to receive the coinplemental edge 12 of the cap 15, and a ring 1&1 of insulating material is secured within said cap by the several binding posts 13 as shown. Each binding post holds a spring contact member 16 in engagement with the inner iange portion of each contact segment 9. There are, of course, as many binding posts as there are conductor segments 9. The four binding posts 13 cooperate with the wiring leading to the spark plugs in the well known manner, current being supplied to the contact roller 19 on the arm 18 of the shaft in the usual way.

It will be obvious, of course, that by making the necessary alterations, the device may be employed on engines having any number of cylinders, the alterations merely residing in changing the number of contacts and binding posts, together with the parts cooperating therewith.

It will also be readily understood from the foregoing that to start an engine by means of this commutator, it will be necessary only to move the ring 6 by means of the adjusting member 2O until the segment 9 that controls the cylinder having gas under pressure, is reached by the contact roller 19, thereby completing the electric circuit and producing a spark to ignite the charge and start the engine to function.

The illustration shows a particular embodiment of the invention though itis understood, of course, that the invention may be carried out in other ways, and that therefore the present disclosure is to be considered in an illustrative sense only and not as a limiting one.

Having thus described my invention, what is claimed as new is:

A commutator comprising a stationary member having an insulating ring with a plurality of radial openings therethrough spaced about the same, a binding post having an enlarged head located within each of said radial openings, a resilient Contact finger secured beneath said enlarged head of each of said binding posts, said contact. inger having a portion extending outwardly at an angle from the head of said binding post said outwardly extending portion Contact fingers, and a rotating shaft having aV Contact member thereon adapted to make electrical connections. with said Contact segments during the revolution of said shaft, substantially as setr forth.

In testimony Wl'iereol I affix my signature.

MICHAEL BOTTINO. 

